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I assume by "round bars" you are referring to rings, or cylinders. The answer is no, except for forged rings, & pipe. You did not provide sufficient data to make a specific recommendaton. The general options for a flange are: 1. A forged ring for you to finish machine. 2. A finished...

For your case, the compressor housing would be exempt per U-1(c)(2)(c). The air/oil receiver would not be exempt per this paragraph. Though the receiver may be a "functional" part of the system, the receiver is not a "functional" part of the compressor. The compressor...

garnet1, You can address this question to Bonney Forge. Years ago, BonneyForge provided tables with full dimensions for WOL, TOL, etc., that gave you all the dimensions you needed for calculating reinforcement per the various ASME PV & piping codes. They no longer publish these dimensions...

BMOORTY, Per UG-80, permissible out-of-roundness for cylindrical shells is 1% of nomimal diameter at cross section. Pipe specifications also generally limit out-of-roundness to 1%, though some specs for fusion welded pipes allow 1.5%. Lacking other direction, I have used the 1% criteria of...

Hi, A general add to previous posts is to identify all Code references in the calculation. These would include referecnces for all applicable Code paragraphs & formulas addressed in the calculation.

deanc is correct. Minimum thichness after forming must equal or exceed the required calculated thickness. You must confirm this by final measurement, as would be required for any pressure part.

chinus, The lift lug is a non-pressure attachment, & is not in use when vessel is operating. Therefore, the design parameters should consider safe load conditions. For design of the liftlug & attachment weld to vessel, we use the same factor of safety as for MSS Under the Hook Lifting device...

esce, When you refer to rectangular flange, are referring to its cross section, or shape?

deanc, You are correct. The design package must be accepted by the AIA. This includes design methods within the Code, & those offered based upon good engineering practice where the Code does not offer methods or formulas. Use of methods not contained in the Code must be adjusted to Code...

spike, My previous post directed you to AWWA M11, which does provide rules for design & reinforcement for large opening approaching & equal to the shell diameter. It provides rules for "crotch plate" reinforcement.

Per 1-7(c), "appropriate proof testing may be advisable in extreme cases of large openings approaching full vessel diameter, openings of unusual shape, etc." Per U-2(g, the Code acknowledges that it does not contain rules to cover all details of design & construction. Where details &...

jamesh8448, Check out "Tubular Steel Structures, Theory & Design" The James F. Lincoln Arc Welding Foundation $15.00 US at http://www.jflf.org Chapter 7 "Bins & Bunkers" Provides design by large deflection theory

In general, the variation of allowable stress versus thickness in Section IID matches variaton in specified minimum tensile strength versus thickness in the material specification. The answer to your second question is no, there is no difference in allowable stresses in new and corroded vessels.

For ASME VIII, 1 the requirements are laid out in UG-125 thru UG-137. UG-133 addresses capacity requirements including operating loads, fire protection, systems of interconnected vessels, internal failure for HX's, etc.

The flues & ducts external to the boiler, on both inlet & flue gas sides are beyond the scope of ASME Section I. The design pressures & temperatures for these flues & ducts are as specified by the boiler manufacturer. For inlet ducts on forced draft (FD) boilers, the minimum design pressure will...

As a followup, the method I described is discribed in Taylor Forge flange design bulletin (502 or earlier)

Design per ASME Section VIII, Div 1, Appendix 2 with OD of flange "A" equal to the flange diameter between the lugs.

Is your inquiry for a power boiler, or for a heat recovery steam generator?

I recommend that you follow bdog's advice & use Blodgett. Note that the method in Megyesy is limited to small tanks: 30cuft for unstiffened & 140cuft for stiffened tanks. On several occasions I have used Blodgett to check calc's using Megyesy method, & found the Megyesy method to be...

daniellouw Demister manufacturers will define a minimum disengaging height above a demister. A factor in this decision is the contour of the region above the demister. I suggest you discuss your requirements with the manufacturer.